Slip-sheet machine for printing-presses.



P. M. TURCK. SLIP SHEET MACHINE PoR PRINTING PRESSES.

ILPPLIOATION FILED NOV. 12, 1913. E @El @mo Patented Aug. 18, 19M.

2 SHEETS-SHEET 2.

iT STATES FREDERICK M. TURGK, OE NEW YORK, N. Y.

SLIP-SHEET MGHINE FOIE@ PRINTING-PRESSES.

Specification of Letters Patent.

Patent-ed Aug.. its, Miter.

- Application :tiled November 12, 1915. Serial En. $00,523.

and State of New York, have invented certain new and useful improvementsin Slip Sheet Machines for Printing-Presses, of which the following is aspecification.

The invention relates to improvements in slip-sheet machines forprinting presses, in which the printed sheetsdelivered from the pressare automatically received and separably held in transit by a foldedslip-sheet web for a sufficient time to afford the necessary dryinaction of the ink. Urdinarilyjn machines of this'class thefold'edslip-sheets and printed sheets are laid in Contact upon oneanother, and where the number of piled sheets and aggregate weightthereof are considerable, much difliculty is experienced both ineffecting rapid drying and in the prevention of offset.

The objects 4of the present invention are to provide a slip-sheet webfoldable in a zigzag manner into a series of sheet-support ing sectionsand cover sections, in which the several sections are so constructed asto normally present a' plane surface under working conditions, and afterbeing bent over itself, in the act of unfolding, to possess sufficientelasticity to again assume its normal plane condition.

A further object provides for propelling the folded web sections inspaced relation with one another, for the .support of the printed sheetsin transit, to effect a more rapid drying` action thereon and theprevention of odset. `'And the invention also includes means forunfolding the web sections for thel delivery of the dried sheets,.andfor advancing and positioning the Yunfolded web to effect under theinfluence .of gravity an overfolding action of the sections thereof forthe reception of the printed sheets.

in describing the invention in detail reference is had to theaccompanying drawings, forming a part of this.A specification, andwherein like characters are used to designate corresponding partsthroughout the several views, and `in which:

`l `ignre 1 is a side elevation of the. machine embodying the presentinvention, part-s thereof bein A4breken to indicate a contraction inytie height thereof; Fig. Q. av ground plan of the same in which theslipsheet weh is indicated 4by broken lines; Fig.v i3 1s an enlargeddetail perspective view' of the sections of the slip-sheet web; and Fig.l

is an edge View of Aa bent fr-agmental porn tion of the latter. i

In the drawings, numerals l and 2 designate respectively the front andrear main frames of the machine, connected in the usual manner'hycrossbraces. Fixed upon the interior of the opposite frames, arebearings 3, in which are rotatably, supported a double series ofscrew-conveyers 4 .and 5, having at theirlower ends bevel driving 'gears6, engaged by corresponding gears i',

fixed to the shafts 8 and 9, which in turn aredriven from' vthe maincrossshaft 10 b the double set of bevel gears 1l, the latter siaft beingournaled in the main fra-mes and provider with the power pulleyl, allmore clearly indicated in Fig. 2. Also journaled in the main frames is asecond cross-shaft 13, receiving its motion from shaft 8 and the set ofbevel gears 14C. U pon the front ends of shafts 10 and 13 are fixed thesprocket wheels 15, which by means of the chains 1G and the upper wheels17 serve to rotate the upper cross-shafts i8, which transmits motion tothe lower cross-shafts 19 by means of the chains 20 and wheels 21, theseupper and lower shafts being journaled in the main frames andconstituting the head and foot shafts of the vertical chain drivers 20.Swingnarms 52;. having idler wheels 23 engaging the chains 20 servie toadjust the tension of the latter upon their res ective wheels. f

he machine as herein disclosed is provided with a double set .ofoppositely-disposed endless slip-sheet webs 24C, each foldedtransversely in a zigzag manner to form supporting sections and coversections for printed sheets of considerable size, indicated by thebroken lines 25.

The web sections, as shown in the enlarged detail views Figs. 3 and 4are made of three sheets of material, preferably of thin tough paper,consisting of a central member 2G and the outer or facing members Q7,connected by the spaced lines of adhesive 28, extending transversely/ofthe webs, the sern eral web sections bein'g hingedly connected togetherby strips of: fabric 29, adhesively secured between the members'of thesections as shown. -To overcome the natural curling action of theindividual members under the dinally thereof. By thus arranging thefibers of the members, not only 'vill the assembled members tend topresent a substantially plane and strong surface for the reception ofthe Work, but When.'L the sectionsare bent during the act of unfold-ing,as shown in Fig. 4, the fiber stress'es in the opposite members willcause a .bulging or separating action of the connected heets between theline of adhesiveon the co cave side of the bend, inducing counteraetingforces tending to return the section to its normally plane conditionwhen released. For advancin the .unfolded web sections each thereof rsAprovided with eyelets 30, adapted to be engaged by the'pins 31, fixed insuitable position upon 'the chain drivers 20. l j. v p

For supporting the folded web sections in spaced relation with oneanother and propelling the same in a doivriivard' direction, thescreW-conveyers 4 and 5"'areemployed, the spiral threads of whicharepositioned to presentthe supporting sections'of the 0ppositelv disposedslip-sheetfwebs in substantially horizontal planes for receiving andholding the printed sheets. At their upper ends the threadsof thescrew-conveyers are provided with an increased outward flare to allord aclear entrance for the overfolded vweb-sections', at which point theprinted sheets are? received from the press by means of any approvedpress-delivery mechanism, preferably including a projecting recipro.catory sheet-gripper bar timed with respectAv to the slip-sheet machine.y y

At the lower or deliveryy end of the machine, the joint unfolding actionof the oppositely disposed slip-sheet Webs allows the plfintge'jdsheetsto fall by gravity upon the table 232,' the'latter beingpreferably provided uji-th castersI for convenience in hanv dlin'g thedelivered sheets. For controlling the' unfolding movements of the Webs,crossare employed, having terminal bldcks, ,34, slidably mounted inslots 35, formed in the front and rear frames, the blocksbeing connectedon o posite sides of the machine to the levers 36 Iby the links 37.Cross-shafts 38, mounted for rocking movement in the opposite frames,secure the opposite levers in fixed relation with each other2 the leverson the front side of the machine being provided with the arms 36, towhich is pivotally connected one end of the cam-rods 39, the oppositeend being slotted for engaging tho shafts 10 and 13,

'which latter are provided withcams 40, en-

gaging rollers 41, mounted upon the rods, the rollers 'eemg indicated 1ndotted lines.,

By the rotationof the'cams-40, the crossbars 38 arepositively 'driven inthe direction of the unfolding movement of the Web sections,`and for.the return movement of the crossbars,lspring vrods 42 are employed, thelatter being-pivotally connected to the arms 36?' and provided Withsprings 43,-vvhich serve 5tov maintain operating -conection with thesito slip-sheet Webs fall by gravity from the free lower thread-ends` ofthe rotating screw conveyers upon the tension-rods l45, as shown, and inthe continued movementof the Webs, as imparted by the drive-chains 20,they Will be unfolded by bending action in the manner indicated in theseveral po? sitions by the broken lines, a, and c, the extent of thebending action beingv regulated by the laterally yielding andhorizontally movable tension-rods 45 and the connected cross-bars 33. pf

In conjunction With the unfolding movement of the web sections, acorresponding overfolding action is effected at the upper or receivingend of the machine by the con- Which serve to advance the unfolded Websand project the sections thereof into such positionsas to cause them tofall by gravity and automdtically fold. To more effectively control thisoverfolding movement, means are provided to 'prevent-the prematurebending or buckling action of the web sections consisting of a series ofcarrier-bars 47 which lextend across the machine and transversely engagethe advancing web sections. The carrier-bars are-connected totinuousmovement of the drive-chains 20,

gether in pairs and provided with terminalv rollers engagin the'raceways 48, secured to the opposite rames. An upward movement,corresponding in speed with that of the advancing Web, is imparted tothecarrior-bars by the drive-pins 49, fixed to the o carrier-chains 50,which are mounted upon the wheels 5l, secured to the cross-shafts 52,which latter are mounted for rotation in the opposite main frames anddriven by the spur-gears 58 from the cross-shafts 18. In the movement ofthe carrier-chains, the pins thereon severally engage the carrier-bars47 and elevate them from the bottom to -the vtop of'the vertical portionof the raceways,

monete around the upper bends ot which they are forced end dowiiiiiirdlyreturn by gravity by Way of the curved positions thereof. "lvio sets ofcarrier-bars are employed for each web, one set thereof being arrangedfor an upward movement While the other set is descending; the lattermovement being regulated by trips 54:, pivoted to the op positeraceivays and each provided with arms 55 `and 56, the `former armsengaging the opposite ends of the downwardly advancing carrier-har ofeach pair to arrest its movement and suitably position the same withrespect to its clearance with the pre- .iceding pair ot carrier-harsrind timely engagement by the drive-pins 49. To eiiect 'the latterengagement, the arms 56 of the trips are engaged by the dogs 57,4suitably positioned upiin opposite ends of the crossshafts 18, so that:it each revolution ofthe latter the trips are disengaged from thecarrier-bars.

As shown herein, the cross-shafts 18 and 52, carrying respectively thedrivechsins and' carrier-bar chains, are proportioned to malte onerevolution for he advancement oit each web section, or two revolutionsfor a complete overtolding of a carrier section vnd e cover section ofthe web, which double rotation corresponds vwith one revolution of thecross-shaft 13, actuating the. delivery mechanism of the machine, Forillustratling more clearly the overfolding action of thresds ci'thefscreiv conveyors and in post tion to receive a printed sheet, and cand f designate respectively the corresponding positions of the nextfollowing ciirrier sections und cover sections of the webs, ln the ad'vanceinent of the web a half-section length, c and f respectivelyassume the positions el and f1, 'the next following sectionbeing)riiiziiiitaiiied in a vertical path. by the coinsident movement of thecarrier -bar el, unich continues thus to control the section for itsfull upward advancement to the po sition g, at which position thecarrieihoars nrc driven over the upper liiend of the race way oi; therelease of the web section, allow- .ingl the latter to fall to theposition g1, section c1 to position c2 and j, the cover sec-I iicii, tofall and @verteld ,upon the advancing threads of the screW-conreyersl lnits mli'ifinccmenl', the next following" section of ne ivcbivill,lilccii'isc be vertically sustained )orfirily by the immer-bari, andsection l carried 'to vthe position g2, and upon the previously foldedsection f, and constitute a new carrier section. lt will thus be obviousthat the succeeding Web sections may be readily overfolded upon thethreads oi' the screw-conveyer and retained in separated relationthereby for the reception and retention of the printed sheets, thelateral position of the folded sections being innintained throughout theheight of the ma chine by the fixed vertical guidebars 58, suitablysupported and positioned to receive the thrust .of the webA sectionsduring' their unfolding and overfolding movements.Veitically-elfictei'iding` guidebars are also conveniently 'spaced inlined relation ad jacent the drive-chains 2,0 and carrier-bars 47, andserve to laterally support the unfolded webs for eiieoting the drivingaction thereof.

While ll have shown and described the preferredA construction of theslip-sheet Webs, it will be evident that the number of inemberscomprising a section and the material thereof may be varied, and thedirection o' the fiber-lines of the opposing members transposed', andthe spaced connection lines formed by stapling; or otherwise, Withoutdeparting 4from the principle of the invention. Also, when theprinted-sheets are comparatively small, as supplied by a relativelysmall printing press, one folded slipsheet web may be used in place ofthe doublei set of Webs set forth, the latter being' preferably employedin the larger machines, as yallowing of smaller sections, oliering lessresistance and consequent greater-durability and increasedyvorkingspeed. ln exceptionally large .machines additional transverse rein-l:forcing bars may be secured to the sections adjacent the hinge members.

What il claim as my invention and desire to secure by Letters Patent,is:

l.' An endless iiexible slip-sheet Weboldable transversely in a zigzagmanner and comprising a series of hingedly connected sheetsupportingsections and cover secl 'lll tions, each thereof consist-ine; of aplurality of dexible slieetinembers connected together by spaced linesof adhesive extending transversely of said web.

2. An endless flexible slipshcet Web foldable transversely in a zigzagmanner and comprising; a 'seresbil hingedly connected sheetfsupportingsections ond cover sec tions, each thereof consisting; of a centrdflexible sheet member and iiexible-sheet facino' members disposed onopposite sides of said central member and secured thereto by spacedlines of 'adhesive extending; trans versely of said web.

An endless ,flexible slipsheet nele-folds able transversely in .a zigzagmanner and comprising ,a series of hingedly connected sheetsuPpOrtngsections and cover sections, erich tliereoc'onsisting of 'a centralmember v lines of adhesive extending transversely of of said centralmembers and having its fiber-v said web. Y

4. An endless flexible slip-sheet web foldable transversely in a zigzagmanner and comprising a series of sheet=supporting sections and coversections, each thereof consisting of a central member formed of paperhaving its liber-grain extending transversely of said web, fabric hingesections connecting said series of central members, and paper facingmembers disposed-on oppositc'sides grain extending longitudinally ofsaid Web and. connected to said central members by spaced lines ofadhesive extending transversely of said web. l

5. An endless exible slip-sheet web foldable transversely in a zigzagmanner and comprising a series of hingedly connected 'sheet-supportingsections and cover sections, and eyelets formed in each of saidsections.

6. A slip-sheet machine comprising an endless flexible slip-sheet webfoldable transversely in a zi zag manner and forming a series of hingely connected sheet-supporting sections and cover sections, means forVadvancing said web and overfolding said sections by gravity for theIreception of the printed sheets and means for unfolding said sectionsfor the delivery of said sheets.

7. A slip-sheet machine comprising an endless iexible slip-sheet webfoldable transversely in a zigzag manner and forming a series ofhingedly connected sheet-supporting sections and cover sections, meansfor advancing said web and over-folding said sections by gravity fpr thereception of the printed sheets, means for supporting and propellingsaid folded web sections in spaced relation With one another, and meansfor nnfolding said sections for the delivery of said v sheets.

8. A slip-sheet machine comprising an endless iexlble slip-sheet webfoldable trans versely 1n a zi zag manner and forming a ,series offhingelyconnected sheet-supporting sections and cover sections, moans forsupporting4 and propelling the folded web sections` in spaced relationwith one another, means for presenting the supporting sections for thereception of printed sheets, means'for overfolding said cover sectionsat the receiving end of the machine, and means for unfolding saidsections for the delivery of said printed sheets.

nieuwe 9. A slip-sheet machine comprising a pair of endless flexibleslip-sheet webs foldable printed sheets, means for overfolding saidcover sections at the receiving end of the machine, and means forunfolding said sections for the delivery of said printed sheets.

10. A slip-sheet machine comprising an endless flexible slip-sheet webfoldable transversely in a zigzag manner and comprising a series ofhingedly connected sheet-supporting sections and cover sections, eyeletsformed in said web sections, means 'ii-1r snpporting and propelling thefolded web seetions in spaced relation with one another,` and drivingmeans engaging said eyelets for advancing said web to unfold andoverfold said web sections at the delivery and the receiving ends of themachine respectively.

l1. A slip-sheet machine comprising an endless -exible slip-sheet webfoldable transversely in a zigzag manner and comprising a series ofhingedly connected sheet-supporting sections and cover sections, meanscomprising a. series of rotatable screw conveyers for supporting andpropelling the` folded web sections in spaced relation with one another,and means for unfolding and overfolding said Web sections at thedelivery and` l receiving ends of the machine respectively.

12. A slip-sheet machine comprising an endless exible slip-sheet webfoldable transversely in a zigzag mannerand comprising a series ofhingedly connected sheet-support'- ing sections and cover sections,meansfor supporting and propelling the folded web sections in spacedrelation with one another, means for overfolding said sections at thereceiving end of the machine, and means including a slidable yieldingweb engaging tension bar for unfolding said sections at the delivery endof the machine.

Signed at New York,. in the county of New York and'State of New Yorkthis 10th day of November A. D. 1913.

Criss. W. Ln RUE, W. H. HUSTED.'

